CVE Vulnerabilities

CVE-2023-20072

Published: Mar 23, 2023 | Modified: Nov 07, 2023
CVSS 3.x
8.6
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the fragmentation handling code of tunnel protocol packets in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected system to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of large fragmented tunnel protocol packets. One example of a tunnel protocol is Generic Routing Encapsulation (GRE). An attacker could exploit this vulnerability by sending crafted fragmented packets to an affected system. A successful exploit could allow the attacker to cause the affected system to reload, resulting in a DoS condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability.

Affected Software

Name Vendor Start Version End Version
Ios_xe Cisco 17.9.1 17.9.1
Ios_xe Cisco 17.9.1a 17.9.1a
Ios_xe Cisco 17.9.1w 17.9.1w

References